Grain door



Jan. 21, 1930. F. FULLER ETAL 1,744,160

GRAIN DOOR Original Filed Sept. 16. 1927 Patented Jan. 21, 1930 UNITED STATES PATENT OFFECE GRAIN DOOR Application filed September 16, 1927, Serial No. 220,042. Renewed June 8, 1929.

The invention relates to improvements in grain doors and an object of the invention is to provide a simply constructed strong and durable door which can be readily placed in closed position in the car and effectively locked, and which is also arranged so that it can be quickly unlocked to open under the outward pressure of the grain within the car.

A further object is to provide for the sealing of the door after it has been locked and also a door which requires no fixtures on the car to retain it in place.

With the above more important objects in view, the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described, reference being had to the accompanying drawing, in which V Fig. 1 is an exterior view of the car equipped with our door.

Fig. 2 is an enlarged horizontal sectional view at 22 Figure 1.

Fig. 3 is a vertical sectional view at 3-3 Figure 1.

Fig. 4: is an enlarged horizontal sectional View at 4- 1 Figure 1.

Fig. 5 is a perspective view of certain portions of the door. a

Fig. 6 is a perspective view of the U-shaped hook.

In the drawing like characters of reference indicate corresponding parts in the several figures.

The doorway opening 1 of the car 2 is bounded as usual by the posts 3 and 4, lintel 5 and sill 6. The door which we provide isformed from inner and outer lapping sections 7 and 8 which when in the closed position have their outer ends engaging the inner face of the posts. The inner section 7 has a length somewhat less than the width of the doorway opening and to the front side of it at, say the left hand end, we permanently secure a vertically disposed comparatively wide strip or board 9 which has the inner side thereof cut to present a tapering edge 10. The outer door section 8 has a length also shorter than the width of the doorway opening and the inner end thereof presents a tapering edge 11 complementary to that 10,

whilst the outer end rests against the inner face of the door post 1. To the inner face of the right hand end of the door section 8 we secure also a vertically disposed comparatively wide strip or board 12 which has the inner edge thereof cut to present a tapering face 13, and this face abuts a complementary face formed at the adj acent end of the inner door section.

Vertically disposed reinforcing battens 14 and 15 are secured to the inner face ofthe inner door section and a single vertical batten 16 is fastened to the strip 12. The outer door section is reinforced also by vertically disposed battens 17 and 18 and the strip 9 is provided with a pair of spaced vertically disposed reinforcing battens 19 and 20, the batten 20 beingimmediately joining the inner edge of the said strip. The batten 17 is adjacent the inner edge of the door section 8 and is spaced a short distance from the batten 20. Horizontallydisposed spaced reinforcing bars 21, 22 and 23 are secured to the battens 17 and 18 and have their inner ends overlying the batten 20 and stopping short of the batten 19. The inner ends of the bars are all provided with a hole 24 and each hole in the closed position of the door is adapted to receive a pin 25 carried in each instance by a Z-shaped. bar 26 permanently fastened to the batten 19.

Locking levers 27 are pivotally attached to the batten 19and the levers are pivotally connected together by a vertically disposed operating bar 28. In the closed position of the door these levers are located as best shown in Figure 1, where it will be observed they overlie the outer ends of the pins 25 and pre vent the extended ends of the bars 21, 22 and 23 from escaping from the pins.

1 To the batten 19 we secure permanently a bar 29 which has the free end thereof passing to the outer side of the bar 28, and these latter bars .are both fitted with registering openings 30 adapted to receive a U-shaped hook 31 carried by a chain 32 attached to the strip 9 of the inner door section. This hook is provided with opposing openings 33 and 3a which allow of the door being sealed by a car seal indicatedgenerally by the reference numeral 35, the wire 36 of the seal passing through the openings 33 and 34.

When the door is placed in the car in closed position, we consider it advisable to prevent end shifting or raising of the door or leakage of grain between the ends of the door and the posts by driving nails 37 through the ends of the door and into the posts. WVhen it is desired to open the door one breaks the car seal and removes the hook and then end shifts the bar 28 upwardly, such resulting in the down swinging of the inner ends of the levers and the freeing of the bars 21, 22 and 23 from the pins 25. As soon as the bars are so freed the pressure of the grain in the car buckles the door outwardly and accordingly frees the grain from the car, the nails 37 at this time withdrawing from the posts under the leverage action of the mov ing sect-ions. It is an easy matter to place the door in closed position in the car and to lock the same as will be readily understood.

What we claim as our invention 1. The combination with the door posts of a car, of a grain door formed from inner and outer sections having their outer ends engaging the inner faces of the posts and their inner ends lapped, a plurality of horizontally disposed bars secured permanently to the outer face of the outer section and having their inner ends lapping the inner section, a plurality of pivoted levers carried by the inner door section and overlying the latter end of the outer door section, an operating bar pivotally connecting the levers and means for releasably locking the operating bar to the inner door section.

2; The combination'with the door posts of acar, of a grain door comprising inner and outer sections having their outer ends engaging the inner faces of the door posts and their inner ends lapped, vertically disposed battens secured to the outer faces of the sec tions, a plurality of spaced horizontally disposed reinforcing bars secured to the outer section and having their inner ends lapping the innermost batten of the inner section, pins carried by the innermost section and normally entering holes provided in the latter ends of the bars, a plurality of levers pivotally attached to the inner section and normally overlying the latter ends of the bars and the pins, an operating bar pivotally connecting the levers and means for releasably locking the latter bar to the inner section.

3. The combination with the door posts of a car, of a grain door comprising inner and outer door sections having their outer ends engaging the inner faces of the posts and their inner ends lapping, a vertically disposed strip secured to the inner face of the outer door section'and engaging the lapped end of the inner door section, a vertically disposed strip secured to the outer face of the inner door section and engaging the lapped end of the outer door section, said strip forming with the adjacent section vertical joints, vertically disposed battens secured to the outer face of the outer door section and to the outer face of the strip of the inner door section, a plurality of horizontally disposed spaced bars secured to the battens of the outer door section and having their inner ends overlying and extending beyond one of the battens of the inner door section, a plurality of levers pivotally secured to another of the battens of the inner door sections and normally overlying the inner ends of the bars, a vertically disposed operating bar pivotally connected to the levers, pins extending from the inner door section and entering suitable openings provided in the inner ends of the bars, a bar permanently secured to the inner door section and overlying the operating bar, said latter bars being provided with registering openings and a locking member carried by the inner door section and normally passing through said openings.

Signed at Borden, Saskatchewan, this 21st day of March, 1927.

FRANK FULLER. OLE BRAND. 

